CN104710079B - A kind of applying modified modenite is processed the method for municipal middle water - Google Patents

Abstract

The invention discloses a method for treating urban reclaimed water by using modified mordenite. The COD value of the reclaimed water is between 65-95 mg/L, and the method is characterized in that the method includes sequentially carrying out fly ash Adsorbent treatment, biological deodorant treatment, biological deodorant treatment, modified mordenite adsorption treatment; in the present invention, the fly ash adsorbent can adsorb large particle organic matter in water, and the biological deodorant can eliminate peculiar smell in reclaimed water , Biological purifiers can consume residual organic matter in reclaimed water, and modified zeolite can efficiently remove calcium and magnesium ions, fluoride ions and other heavy metal ions in sewage.

Description

A method for treating urban reclaimed water using modified mordenite

technical field

The present invention is a divisional application of the invention patent application "A Method for Advanced Treatment of Urban Reclaimed Water" (Application No.: 201410057403X) submitted on February 20, 2014. The invention belongs to the field of urban sewage treatment and environmental protection, and in particular relates to a method for treating urban reclaimed water with modified mordenite.

Background technique

Reclaimed water, also known as reclaimed water, refers to water that can be used beneficially after proper treatment to meet certain water quality indicators and meet certain use requirements. A large amount of reclaimed water is used for landscape water. As the second water source for cities, urban reclaimed water (hereinafter referred to as reclaimed water) has the characteristics of large water volume, stable water quality, reliable source and no need for long-distance water diversion. It is a renewable water resource for sustainable development in the future. Reuse of reclaimed water can effectively solve the shortage of water resources, improve the reuse rate of water resources and reduce sewage discharge, which has huge social benefits and good economic benefits. Although the concentration of pollutants in reclaimed water meets the national discharge standards and the water quality is better than industrial sewage, some indicators are still poor and cannot meet the water quality requirements of industrial production, such as COD, suspended solids and microorganisms. Therefore, urban water must be properly treated before it can be reused.

If urban reclaimed water is not treated properly, it will cause eutrophication of the water body and the deterioration of the water ecological environment. From the sensory perspective, the algae in the water will grow geometrically, the transparency and dissolved oxygen in the water will decrease, the water quality will deteriorate, and different colors will appear, which will endanger the quality of life in the water. The health of animals, plants and human beings will hinder and destroy the water ecology and water functions, the taste of water will become foul, the transparency of water will decrease, and the water body will be turbid, so that the landscape water body will lose its aesthetic value such as viewing and entertainment. Therefore, it is a major technical research hotspot in this field to improve the advanced treatment of urban reclaimed water so that it can ensure no damage to human body, animal body and water body when it is used for landscape water.

Contents of the invention

In order to overcome the deficiencies in the prior art, the object of the present invention is to provide a method for treating urban reclaimed water using modified mordenite, which can carry out advanced treatment of urban reclaimed water, with high pollutant removal efficiency, stable effluent quality, and basically no pollutants. be removed to meet the requirements for landscape water input.

The technical scheme of the present invention is as follows.

A method of applying modified mordenite to treat urban reclaimed water, the COD value of said reclaimed water is between 65-95mg/L, said method comprising sequentially carrying out fly ash adsorbent treatment, biological deodorant Treatment, biological purification agent treatment, modified mordenite adsorption treatment; specifically:

(1) Fly ash adsorbent treatment: introduce reclaimed water into the fly ash treatment pool, put fly ash adsorbent into the pool to pre-treat the reclaimed water, the ratio of the weight of fly ash adsorbent to the weight of reclaimed water Between 0.8-2.8:100, the treatment time is 3-36h; the described fly ash adsorbent is prepared by the following method: (A), in parts by weight: 10-15 parts of quicklime, 5-9 parts of montmorillonite 1-5 parts of vermiculite, 2-20 parts of clay, 2-6 parts of methyl cellulose, 1-2 parts of sodium bromide, 5-10 parts of alumina, 100-240 parts of fly ash, each raw material Mix evenly, add water to make spherical particles with a diameter of 35-45mm, then sinter in a tunnel kiln at 950-980°C for 2-3h, and obtain a fly ash adsorbent precursor after cooling; (B), prepare a molar concentration of 1- 1.5mol/L sodium bromide aqueous solution, the fly ash adsorbent precursor that step (A) obtains is poured into described sodium bromide aqueous solution and carries out immersion treatment 16-24h, (C), will pass through step (B) The impregnated fly ash adsorbent precursor is put into a vacuum oven for drying treatment for 10-20 hours to obtain the fly ash adsorbent;

(2) Biological deodorant treatment: introduce the reclaimed water treated with fly ash adsorbent into the biological deodorization tank, add biological deodorizer to the pool, and the ratio of the weight of biological deodorant to the weight of reclaimed water is 0.1 Between -0.8:100, the treatment time is 3-5 days; the microbial strain composition of the biological deodorant is: Lactobacillus acidophilus 10 ⁶ -10 ⁹ /mL, Bacillus pumilus 10 ⁶ -10 ⁹ 1/mL, Bacillus subtilis 10 ⁶ -10 ⁹ /mL, Pseudomonas fluorescens 10 ⁵ -10 ⁷ /mL, Rhodopseudomonas palustris 10 ⁵ -10 ⁷ /mL, Bantu Brettanomyces Bacteria 10 ⁴ -10 ⁶ /mL, Candida vulgaris 10 ⁴ -10 ⁶ /mL, Penicillium expansica 10 ⁴ -10 ⁶ /mL, Rhizopus oryzae 10 ⁴ -10 ⁶ /mL, green wood Mycobacterium 10 ⁴ -10 ⁶ /mL, Streptomyces luteus 10 ⁴ -10 ⁶ /mL and Streptomyces griseus 10 ⁴ -10 ⁶ /mL;

(3) Biological purification agent treatment: introduce the reclaimed water treated with biological deodorizer into the biological purification tank, add biological deodorizer to the pool, and the ratio of the weight of biological deodorizer to the weight of reclaimed water is between 0.8-6.8:100 Between, the treatment time is 5-9 days, adjust the aeration condition so that the amount of dissolved oxygen in the middle water is 3-4mg/L; The strains in the biological purifier include Rhodopseudomonas haemophilus, Streptomyces jingyangii , and Streptococcus lactis, the culture medium of the described bacteria is composed of the following components in mass ratio: brown sugar 5-6%, yeast powder 1-2%, and the balance is water;

(4) Adsorption treatment of modified mordenite: the reclaimed water treated with biological purifiers is filtered and transported to the water inlet of the adsorption tower at the bottom of the adsorption tower by a lift pump. The adsorption tower is filled with non-woven fabric layers, Quartz sand layer and modified zeolite layer, wherein, the thickness of the non-woven fabric layer is between 2-20mm, and the thickness ratio of the quartz sand layer and the modified zeolite layer is 1:0.5-0.8; the modification of the modified mordenite The specific steps are: mix mordenite, kaolin, silica-magnesia gel, scallop powder and phosphoric acid uniformly according to the weight ratio of 60:30:30:20:20, and then add water to prepare a slurry with a solid content of 50-55%; the slurry is sprayed Dry it into powdery particles, then roast the powdery particles in a muffle furnace at 500-700°C for 3-5 hours, then cool to room temperature to obtain modified zeolite; water flows out from the outlet of the adsorption tower at the top of the adsorption tower, and passes through The pump delivers to the water storage tank for advanced treatment of product water.

Preferably, the molar concentration of phosphoric acid in the modification step is 0.9-1.3 mol/L, preferably 1.0 mol/L.

Described mordenite is commercially available mordenite, or the mordenite that can be obtained by those skilled in the art. The present invention finds that mordenite has a good effect in adsorbing metal ions in sewage due to its specific structure. After the adsorption treatment of active mordenite, the pollutants in the water are further reduced.

In the present invention, through advanced treatment of urban reclaimed water, as well as fly ash adsorbent treatment, biological deodorant treatment, biological purification agent treatment, and modified mordenite adsorption treatment, the effluent water quality is stable and meets the requirements of landscape water. Fly ash adsorbent can absorb large particles of organic matter in water, biological deodorant can eliminate odor in reclaimed water, biological purifier can consume residual organic matter in reclaimed water, and modified zeolite can efficiently remove calcium and magnesium ions and fluorine in sewage ions and other heavy metal ions.

detailed description

The present invention will be further described in detail below in conjunction with specific embodiments.

Example 1

A method for treating urban reclaimed water, the COD value of said reclaimed water is 95mg/L, said method comprising sequentially carried out fly ash adsorbent treatment, biological deodorant treatment, biological purifier treatment, modified Zeolite adsorption treatment; specifically:

(1) Fly ash adsorbent treatment: introduce reclaimed water into the fly ash treatment pool, put fly ash adsorbent into the pool to pre-treat the reclaimed water, the ratio of the weight of fly ash adsorbent to the weight of reclaimed water Between 2.8:100, the treatment time is 36h; the described fly ash adsorbent is prepared by the following method: (A), according to parts by weight: 15 parts of quicklime, 9 parts of montmorillonite, 5 parts of vermiculite, clay 20 parts, 6 parts of methyl cellulose, 2 parts of sodium bromide, 10 parts of alumina, 240 parts of fly ash, mix all raw materials evenly, add water to make spherical particles with a diameter of 45 mm, and then put them in a tunnel kiln at 980 ° C Sintering 3h, obtains the fly ash adsorbent precursor after cooling; (B), preparation molar concentration is the sodium bromide aqueous solution of 1.5mol/L, the fly ash adsorbent precursor that step (A) obtains is poured into said Sodium bromide aqueous solution is impregnated for 24 hours, (C), after the fly ash adsorbent precursor that has been impregnated in step (B) is placed in a vacuum oven for 20 hours, the fly ash adsorbent is obtained;

(2) Biological deodorant treatment: introduce the reclaimed water treated with fly ash adsorbent into the biological deodorization tank, add biological deodorizer to the pool, and the ratio of the weight of biological deodorizer to the weight of reclaimed water is 0.8 : Between 100, the treatment time is 5 days; the microbial strains of the biological deodorant consist of: Lactobacillus acidophilus 10 ⁶ -10 ⁹ /mL, Bacillus pumilus 10 ⁶ -10 ⁹ /mL, Bacillus subtilis 10 ⁶ -10 ⁹ /mL, Pseudomonas fluorescens 10 ⁵ -10 ⁷ /mL, Rhodopseudomonas palustris 10 ⁵ -10 ⁷ /mL, Bantu Brettanomyces 10 ⁴ - 10 ⁶ /mL, Candida vulgaris 10 ⁴ -10 ⁶ /mL, Penicillium expansica 10 ⁴ -10 ⁶ /mL, Rhizopus oryzae 10 ⁴ -10 ⁶ /mL, Trichoderma viride 10 ⁴ - 10 ⁶ /mL, 10 ⁴ -10 ⁶ /mL for Streptomyces flavinus and 10 ⁴ -10 ⁶ /mL for Streptomyces griseus;

(3) Biological purification agent treatment: introduce the reclaimed water treated by the biological deodorant into the biological purification tank, add the biological deodorizer to the pool, and the ratio of the weight of the biological deodorizer to the weight of the reclaimed water is between 6.8:100, The treatment time was 9 days, and the aeration conditions were adjusted so that the amount of dissolved oxygen in the middle water was 4 mg/L; the bacterial species in the biological purifier included Rhodopseudomonas sanguinus, Streptomyces Jingyang, and Streptococcus lactis, The culture medium of the strain is composed of the following components in mass ratio: brown sugar 5-6%, yeast powder 1-2%, and the balance is water;

(4) Modified zeolite adsorption treatment: After the reclaimed water treated by the biological purifier is filtered, the lifting pump is used to transport it to the water inlet of the adsorption tower at the bottom of the adsorption tower. The adsorption tower is filled with non-woven fabric layer, quartz Sand layer and modified zeolite layer, wherein, the thickness of the non-woven fabric layer is 20mm, the thickness ratio of the quartz sand layer and the modified zeolite layer is 1:0.8, and the water flows out from the outlet of the adsorption tower at the top of the adsorption tower, through the pump It is sent to the water storage tank for advanced treatment of product water.

The modified zeolite in this example is a sodium chloride modified zeolite, and its preparation method is to load a zeolite with a particle size of 0.5 to 1.0 mm in a plexiglass column with an inner diameter of 14 mm, and the modifier NaCl solution at 0.5 m/ The flow rate of h passes through the zeolite layer until the ion exchange is complete.

Example 2

A method of applying modified mordenite to treat urban reclaimed water, the COD value of said reclaimed water is 65mg/L, said method comprising sequentially carrying out fly ash adsorbent treatment, biological deodorant treatment, biological purification Agent treatment, modified mordenite adsorption treatment; specifically:

(1) Fly ash adsorbent treatment: introduce reclaimed water into the fly ash treatment pool, put fly ash adsorbent into the pool to pre-treat the reclaimed water, the ratio of the weight of fly ash adsorbent to the weight of reclaimed water Between 0.8:100, the treatment time is 3h; the described fly ash adsorbent is prepared by the following method: (A), in parts by weight: 10 parts of quicklime, 5 parts of montmorillonite, 1 part of vermiculite, clay 2 parts, 2 parts of methyl cellulose, 1 part of sodium bromide, 5 parts of alumina, 100 parts of fly ash, mix all raw materials evenly, add water to make spherical particles with a diameter of 35 mm, and then put them in a tunnel kiln at 950 ° C Sinter 2h, obtain the fly ash sorbent precursor after cooling; (B), preparation molar concentration is the sodium bromide aqueous solution of 1mol/L, the fly ash sorbent precursor that step (A) obtains is poured into the bromine Sodium chloride aqueous solution is impregnated for 16 hours, (C), the fly ash adsorbent precursor that has been impregnated in step (B) is put into a vacuum oven for drying for 10 hours, and the fly ash adsorbent is obtained;

(2) Biological deodorant treatment: introduce the reclaimed water treated with fly ash adsorbent into the biological deodorization tank, add biological deodorizer to the pool, and the ratio of the weight of biological deodorant to the weight of reclaimed water is 0.1 : between 100, the treatment time is 3 days; the microbial strains of the biological deodorant consist of: Lactobacillus acidophilus 10 ⁶ -10 ⁹ /mL, Bacillus pumilus 10 ⁶ -10 ⁹ /mL, Bacillus subtilis 10 ⁶ -10 ⁹ /mL, Pseudomonas fluorescens 10 ⁵ -10 ⁷ /mL, Rhodopseudomonas palustris 10 ⁵ -10 ⁷ /mL, Bantu Brettanomyces 10 ⁴ - 10 ⁶ /mL, Candida vulgaris 10 ⁴ -10 ⁶ /mL, Penicillium expansica 10 ⁴ -10 ⁶ /mL, Rhizopus oryzae 10 ⁴ -10 ⁶ /mL, Trichoderma viride 10 ⁴ - 10 ⁶ /mL, 10 ⁴ -10 ⁶ /mL for Streptomyces flavinus and 10 ⁴ -10 ⁶ /mL for Streptomyces griseus;

(3) Biological purification agent treatment: introduce the reclaimed water treated with biological deodorant into the biological purification tank, add biological deodorizer to the pool, the ratio of the weight of biological deodorizer to the weight of reclaimed water is between 0.8:100, The treatment time was 5 days, and the aeration conditions were adjusted so that the amount of dissolved oxygen in the middle water was 3 mg/L; the bacterial species in the biological purifier included Rhodopseudomonas sanguinus, Streptomyces Jingyang, and Streptococcus lactis, The culture medium of the strain is composed of the following components in mass ratio: brown sugar 5-6%, yeast powder 1-2%, and the balance is water;

(4) Adsorption treatment of modified mordenite: the reclaimed water treated with biological purifiers is filtered and transported to the water inlet of the adsorption tower at the bottom of the adsorption tower by a lift pump. The adsorption tower is filled with non-woven fabric layers, Quartz sand layer and modified zeolite layer, wherein, the thickness of the non-woven fabric layer is 2mm, the thickness ratio of the quartz sand layer and the modified zeolite layer is 1:0.5, and the water flows out from the outlet of the adsorption tower at the top of the adsorption tower. The pump is transported to the water storage tank for advanced treatment of product water; the modified zeolite is modified mordenite, and the modification step is: mix mordenite, kaolin, silica-magnesium gel, scallop powder and phosphoric acid in a weight ratio of 60:30 :30:20:20 Mix evenly, then add water to prepare a slurry with a solid content of 50-55%; the slurry is spray-dried into powder particles, and then the powder particles are roasted in a muffle furnace at 500-700°C for 3-5h , and then cooled to room temperature to obtain a modified zeolite, wherein the molar concentration of phosphoric acid is 1.3mol/L.

Example 3

A method of applying modified mordenite to treat urban reclaimed water, the COD value of the reclaimed water is 70mg/L, and the method comprises sequentially carrying out fly ash adsorbent treatment, biological deodorant treatment, biological purification Agent treatment, modified mordenite adsorption treatment; specifically:

(1) Fly ash adsorbent treatment: introduce reclaimed water into the fly ash treatment pool, put fly ash adsorbent into the pool to pre-treat the reclaimed water, the ratio of the weight of fly ash adsorbent to the weight of reclaimed water Between 0.8:100, the treatment time is 3h; the described fly ash adsorbent is prepared by the following method: (A), in parts by weight: 10 parts of quicklime, 5 parts of montmorillonite, 1 part of vermiculite, clay 2 parts, 2 parts of methyl cellulose, 1 part of sodium bromide, 5 parts of alumina, 100 parts of fly ash, mix all raw materials evenly, add water to make spherical particles with a diameter of 35 mm, and then put them in a tunnel kiln at 950 ° C Sinter 2h, obtain the fly ash sorbent precursor after cooling; (B), preparation molar concentration is the sodium bromide aqueous solution of 1mol/L, the fly ash sorbent precursor that step (A) obtains is poured into the bromine Sodium chloride aqueous solution is impregnated for 16 hours, (C), the fly ash adsorbent precursor that has been impregnated in step (B) is put into a vacuum oven for drying for 10 hours, and the fly ash adsorbent is obtained;

(2) Biological deodorant treatment: introduce the reclaimed water treated with fly ash adsorbent into the biological deodorization tank, add biological deodorizer to the pool, and the ratio of the weight of biological deodorant to the weight of reclaimed water is 0.1 : 100, and the treatment time was 3 days; the microbial strains of the biological deodorant consisted of: Lactobacillus acidophilus 10 ⁸ -10 ⁹ /mL, Bacillus pumilus 10 ⁸ -10 ⁹ /mL, Bacillus subtilis Bacillus 10 ⁶ -10 ⁷ /mL, Pseudomonas fluorescens 10 ⁶ -10 ⁷ /mL, Rhodopseudomonas palustris 10 ⁶ -10 ⁷ /mL, Bantu Brettanomyces 10 ⁵ -10 ⁶ 1/mL, Candida vulgaris 10 ⁵ -10 ⁶ /mL, Penicillium expansica 10 ⁵ -10 ⁶ /mL, Rhizopus oryzae 10 ⁵ -10 ⁶ /mL, Trichoderma viride 10 ⁵ -10 ⁶ 1/mL, Streptomyces flavinus 10 ⁵ -10 ⁶ /mL and Streptomyces griseus 10 ⁵ -10 ⁶ /mL;

(3) Biological purification agent treatment: introduce the reclaimed water treated with biological deodorant into the biological purification tank, add biological deodorizer to the pool, the ratio of the weight of biological deodorizer to the weight of reclaimed water is 0.8:100, and the treatment time For 5 days, adjust the aeration condition so that the amount of dissolved oxygen in the middle water is 3mg/L; The bacterial classification in the described bio-cleaning agent comprises Rhodopseudomonas sanguinus, Streptomyces jingyang, and Streptococcus lactis, described The culture medium of the bacterial classification is made up of the component of following mass ratio: brown sugar 5%, yeast powder 2%, surplus is water;

(4) Adsorption treatment of modified mordenite: the reclaimed water treated with biological purifiers is filtered and transported to the water inlet of the adsorption tower at the bottom of the adsorption tower by a lift pump. The adsorption tower is filled with non-woven fabric layers, Quartz sand layer and modified zeolite layer, wherein, the thickness of the non-woven fabric layer is 20mm, the thickness ratio of the quartz sand layer and the modified zeolite layer is 1:0.8, and the water flows out from the outlet of the adsorption tower at the top of the adsorption tower. The pump is transported to the water storage tank for advanced treatment of product water; the modified zeolite is modified mordenite, and the modification step is: mix mordenite, kaolin, silica-magnesium gel, scallop powder and phosphoric acid in a weight ratio of 60:30 :30:20:20 Mix evenly, then add water to prepare a slurry with a solid content of 55%; the slurry is spray-dried into powder particles, and then the powder particles are roasted in a muffle furnace at 500°C for 3 hours, and then cooled to room temperature, A modified zeolite was obtained, wherein the molar concentration of phosphoric acid was 0.9 mol/L.

In order to test the product water quality of Examples 1, 2, and 3, the inventor tested the product water obtained in Examples 1, 2, and 3 according to the "Urban Sewage Treatment Plant Pollutant Discharge Standard GB18918-2002", and the test results are shown in Table 1 As shown, it can be seen that the water quality is better than the national first-class A standard and can be used for landscape water. Table 1 is the result of embodiment 1,2.

Although the foregoing embodiment has described the present invention in detail, it is only a part of the embodiments of the present invention, rather than all embodiments, and people can also obtain other embodiments according to the present embodiment without inventive step, these embodiments All belong to the protection scope of the present invention.

Claims (1)

1. the method for an applying modified modenite processing municipal middle water, the COD value of described middle water is between 65-95mg/L, it is characterized in that, described method comprises fly ash absorbent processing, biological deodorant processing, biological cleanser processing, the modified mordenite adsorption treatment of carrying out in turn; Be specially:

(1) fly ash absorbent processing: middle water is introduced in flyash treatment pond, and Xiang Chizhong drops into fly ash absorbent centering water and carries out pre-treatment, fly ash absorbent adds weight and middle water weight ratio example between 0.8-2.8:100, and the processing time is 3-36h; Described fly ash absorbent is prepared by the following method: (A), according to parts by weight: quick lime 10-15 part, imvite 5-9 part, vermiculite 1-5 part, clay 2-20 part, methylcellulose 2-6 part, sodium bromide 1-2 part, aluminium oxide 5-10 part, flyash 100-240 part, each raw material is mixed, adding water and making diameter is 35-45mm spheric granules, then at tunnel cave sintering 2-3h at 950-980 DEG C, obtains fly ash absorbent precursor after cooling; (B) aqueous sodium bromide that, preparation molar concentration is 1-1.5mol/L, the fly ash absorbent precursor that step (A) is obtained is poured into and in described aqueous sodium bromide, is carried out impregnation process 16-24h, (C), by putting into through the fly ash absorbent precursor of step (B) impregnation process after the dry 10-20h of processing of vacuum drying oven, obtain fly ash absorbent;

(2) biological deodorant processing: the middle water of fly ash absorbent processing is introduced in biological deodorization tank, and Xiang Chizhong adds biological deodorant, biological deodorant adds weight and middle water weight ratio example between 0.1-0.8:100, and the processing time is 3-5 days; The microorganism fungus kind of described biological deodorant consists of: lactobacillus acidophilus 10⁶-10⁹Individual/mL, bacillus pumilus 10⁶-10⁹Individual/mL, bacillus subtilis 10⁶-10⁹Individual/mL, Pseudomonas fluorescens 10⁵-10⁷Individual/mL, Rhodopseudomonas palustris 10⁵-10⁷Individual/mL, the figure of class British mold 10⁴-10⁶Individual/mL, candida inconspicua bacterium 10⁴-10⁶Individual/mL, expansion mould 10⁴-10⁶Individual/mL, Rhizopus oryzae 10⁴-10⁶Individual/mL, Trichoderma viride 10⁴-10⁶Individual/mL, streptomyces microflavus 10⁴-10⁶Individual/mL and streptomyces griseus 10⁴-10⁶Individual/mL;

(3) biological cleanser processing: the middle water of biological deodorant processing is introduced in biological purifying tank, Xiang Chizhong adds biological cleanser, biological cleanser adds weight and middle water weight ratio example between 0.8-6.8:100, processing time is 5-9 days, and it is 3-4mg/L that adjustment aeration condition makes the amount of the dissolved oxygen in middle water; Bacterial classification in described biological cleanser comprises Rhodopseudomonas rutila, Jingyang streptomycete, and streptococcus lactis, and the culture medium of described bacterial classification is made up of the component of following mass ratio: brown sugar 5-6%, dusty yeast 1-2%, surplus is water;

(4) modified mordenite adsorption treatment: the adsorption tower water inlet that the middle water of biological cleanser processing is used elevator pump to be delivered to be positioned at after filtering adsorption tower bottom, adsorption tower is filled with nonwoven layer from the bottom up successively, quartz sand layer and modified zeolite layer, wherein, the thickness of nonwoven layer is between 2-20mm, the thickness ratio of quartz sand layer and modified zeolite layer is 1:0.5-0.8, the modification procedure of described modified mordenite is: by modenite, kaolin, silicon magnesium glue, sesbania powder and phosphoric acid mix according to part by weight 60:30:30:20:20, then add water and be prepared into the slurries that solid content is 50-55%, slurries are spray dried to powdery particle, then by powdered granule in Muffle furnace in 500-700 DEG C of roasting 3-5h, be then cooled to room temperature, obtain modified zeolite, water flows out from the adsorption tower delivery port that is positioned at adsorption tower top, is delivered to aqua storage tank through pump, is advanced treating product water.