CN110156275A - A kind of environmentally friendly recirculated water by-pass flow biological treatment system and method - Google Patents

A kind of environmentally friendly recirculated water by-pass flow biological treatment system and method Download PDF

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Publication number
CN110156275A
CN110156275A CN201910511948.6A CN201910511948A CN110156275A CN 110156275 A CN110156275 A CN 110156275A CN 201910511948 A CN201910511948 A CN 201910511948A CN 110156275 A CN110156275 A CN 110156275A
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China
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water
filter
circulating
recirculated water
recirculated
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CN201910511948.6A
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Inventor
卢剑
李亚娟
黄琼
林莹莹
龙柯宇
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Xian Thermal Power Research Institute Co Ltd
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Xian Thermal Power Research Institute Co Ltd
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Priority to CN201910511948.6A priority Critical patent/CN110156275A/en
Publication of CN110156275A publication Critical patent/CN110156275A/en
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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00Multistage treatment of water, waste water, or sewage
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/001Processes for the treatment of water whereby the filtration technique is of importance
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/50Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/52Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/5263Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using natural chemical compounds
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/66Treatment of water, waste water, or sewage by neutralisation; pH adjustment
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/72Treatment of water, waste water, or sewage by oxidation
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00Nature of the contaminant
    • C02F2101/30Organic compounds
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/02Non-contaminated water, e.g. for industrial water supply
    • C02F2103/023Water in cooling circuits
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00Controlling or monitoring parameters in water treatment
    • C02F2209/08Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00Controlling or monitoring parameters in water treatment
    • C02F2209/11Turbidity
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00Specific treatment goals
    • C02F2303/04Disinfection
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00Specific treatment goals
    • C02F2303/08Corrosion inhibition
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2305/00Use of specific compounds during water treatment
    • C02F2305/06Nutrients for stimulating the growth of microorganisms
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/34Biological treatment of water, waste water, or sewage characterised by the microorganisms used
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F5/00Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
    • C02F5/08Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents

Abstract

The invention discloses a kind of environmentally friendly recirculated water by-pass flow biological treatment system and methods, carry out waterpipe including recirculated water, circulating cooling make-up water high-efficiency fiber filter, recirculated water supplements pipeline, circulating water cooling tower, filter backwash waterpipe, centrifugal sludge concentrator, circulating-water bypass, which flows through, filters out water lines, biological film filter, haydites of book structure filter, filter outlet pipe road, carbon source supplements case, biology supplement case, recirculated water bypath filter water return pipeline, biofiltration water return pipeline, haydites of book structure filter backwash water lines, concentration basin supernatant water return pipeline, Circulating water effluent pipeline, the system and method can be realized the scale inhibition of electric power plant circulating water, anti-corrosion and sterilization, guarantee the safe and stable operation of circulation, and secondary pollution will not be caused to environment.

Description

A kind of environmentally friendly recirculated water by-pass flow biological treatment system and method
Technical field
The invention belongs to energy conservation and environmental protection, it is related to a kind of environmentally friendly recirculated water by-pass flow biological treatment system and side Method.
Background technique
In recent years, country enhanced Industrial Water Saving and draining control dynamics, and the prevention and treatment of water pollution was also once becoming limitation work The matter of utmost importance of industry development forces people further to explore water treatment technology that is water-saving and reducing disposal of pollutants.Wherein, power plant uses 20% or so of the total industrial water consumption of water Zhan, recirculating cooling water system need to consume 60% to 80% water.It so, be from Fundamentally realize the zero-emission of power plant effluent, the water treatment work emphasis of power plant should be placed on the chemical treatment of recirculated cooling water.It follows Ring cooling water can cause corrosion and scaling, biological sludge in industrial harm to equipment in the process of running.In the process of running, circulation is improved Water concentration rate can efficiently reduce power plant's displacement, have good facilitation effect to the realization of water-saving and emission-reducing, guaranteeing While water resource is saved, huge economic and social profit is brought.However, excessively high enrichment factor can aggravate fouling and corruption Phenomenon is lost, this also proposes tightened up requirement to technology on circulating cooling water treatment.
Currently, electric power plant circulating water water quality controlling method generallys use chemical method and physical method two major classes.Wherein, chemical Method includes plus water stabilizer, acid adding add antisludging agent, weak acid resin exchange process etc.;Physical method includes magnetized water treatment, Electrostatic water treatment Deng.Traditional chemical method solves fouling, the micro- life of burn by a certain amount of chemical agent is added into recirculated cooling water The problems such as object is multiplied, effect seems obviously, but its investment is larger, operating cost is high, management difficulty is big, it is easy that equipment is made At corrosion, the chemical component in water is changed simultaneously and has been easy to cause secondary pollution to environment.Though electromagnetism mitigation and antiscaling technology has nontoxic Advantage pollution-free, easy to operate, but there is still a need for further researchs in terms of its mechanism and scale inhibition effect.
Summary of the invention
It is an object of the invention to overcome the above-mentioned prior art, a kind of environmentally friendly recirculated water by-pass flow is provided Biological treatment system and method, the system and method can be realized scale inhibition, anti-corrosion and the sterilization of electric power plant circulating water, guarantee recirculated water The safe and stable operation of system, and secondary pollution will not be caused to environment.
In order to achieve the above objectives, environmentally friendly recirculated water by-pass flow biological treatment system of the present invention includes recirculated water Come waterpipe, circulating cooling make-up water high-efficiency fiber filter, recirculated water supplement pipeline, circulating water cooling tower, filter backwash water pipe Road, centrifugal sludge concentrator, circulating-water bypass, which flow through, filters out water lines, biological film filter, haydites of book structure filter, filter Outlet conduit, carbon source supplement case, biology supplement case, recirculated water bypath filter water return pipeline, biofiltration water return pipeline, shale pottery Grain filter backwash water lines, concentration basin supernatant water return pipeline, Circulating water effluent pipeline;
Recirculated water carrys out waterpipe and is connected with the entrance of circulating cooling make-up water high-efficiency fiber filter, and circulating cooling make-up water is efficiently fine The production mouth of a river of dimensional filter device supplements pipeline by recirculated water and is connected with the tower basin of circulating water tower bottom, and circulating cooling make-up water is high The backwash water out of effect fabric filter is connected by filter backwash waterpipe with centrifugal sludge concentrator;
The outlet of circulating water cooling tower bottom tower basin flowed through through circulating-water bypass filter out water lines and biological film filter into The mouth of a river is connected, and the water outlet of biological film filter is connected with the water inlet of haydites of book structure filter, haydites of book structure filter Water outlet be connected through filter outlet conduit and recirculated water bypath filter water return pipeline with the tower basin of circulating water tower bottom It is logical;
Biofiltration water return pipeline is flowed through with recirculated water bypath filter water return pipeline and circulating-water bypass respectively filters out water lines Be connected, the water inlet of haydites of book structure filter backwash water lines and centrifugal sludge concentrator and haydites of book structure filter it is anti- Washing water outlet is connected, the concentrated pond supernatant water return pipeline of the supernatant outlet of centrifugal sludge concentrator and recirculated water water Pipeline is connected;The discharge outlet of circulating water cooling tower bottom tower basin is connected with Circulating water effluent pipeline;
The outlet that fungicide adds case is connected through fungicide dosing pump with the tower basin of circulating water tower bottom;
The outlet of carbon source supplement case is connected through carbon source make-up pump with the carbon source entrance of biological film filter, biology supplement case Outlet be connected through the biology supplement interface of biological make-up pump and biological film filter.
Circulating-water bypass, which flows through to filter out, is provided with bypath filter flow pump in water lines.
Monitoring turbidimeter, online COD detector and circulating-water bypass is provided on recirculated water bypath filter water return pipeline to flow through Filter back-water valve (BWV).
Biofiltration water return pipeline is equipped with biofiltration back-water valve (BWV).
Online conductance table and Circulating water effluent valve are provided on Circulating water effluent pipeline.
The sludge outlet of centrifugal sludge concentrator is communicated with the outer discharge pipe of dehydrated sludge.
Environmentally friendly recirculated water by-pass flow bioremediation of the present invention the following steps are included:
1) raw water removes the suspended matter in water removal through circulating cooling make-up water high-efficiency fiber filter come waterpipe by recirculated water, so that The turbidity of circulating cooling make-up water high-efficiency fiber filter water outlet is controlled in 12NTU hereinafter, circulating cooling make-up water high-efficiency fiber filter is defeated Recirculated water out enters in circulating water cooling tower as cooling tower moisturizing;
2) start fungicide dosing pump, fungicide is added into the compound disinfectant automatic feeding in case to circulating water cooling tower In, sterilization processing is carried out to the recirculated water in circulating water cooling tower by compound disinfectant, eliminates the indigenous flora in recirculated water, Promote the dominant growth of subsequent bio medicament;
3) recirculated water in circulating water cooling tower is flowed through by circulating-water bypass filters out water lines, in bypath filter flow pump Effect is lower to be entered in biological film filter, is added the biological agent in biology supplement case to biomembrane mistake using biological make-up pump In filter, while carbon source is supplemented into biological film filter by the carbon source automatic feeding in case by carbon source make-up pump, so that raw Object medicament carries out growth and breeding in the case where recycling water environment, so that the surface of filtrate forms biomembrane in biological film filter, After biofilm formation, the substance generated in biological agent with flocculation ability flora is given full play to, by the colloid in recirculated water With suspended matter little particle aggregate and precipitate, to reduce the turbidity and suspended matter of recirculated water, in addition, by the control to recirculated water pH, With corrosion calcium carbonate, play the role of scale inhibition;Flora in biological agent passes through the organic matter in breeding consumption recirculated water, dissolution Oxygen and nitrogen phosphorus, so that the COD content of recirculated water meets system service requirement;
4) recirculated water of biological film filter output enters in haydites of book structure filter, utilizes the porous suction of haydites of book structure Attached property is filtered processing to recirculated water, with the sludge for capturing the microbial sludge to fall off and generating through flocculation;
5) recirculated water of haydites of book structure filter output enters recirculated water bypath filter return water through filter outlet conduit In pipeline, product are carried out to the recirculated water in recirculated water bypath filter water return pipeline by online COD detector and monitoring turbidimeter Quality supervision is surveyed, and when the COD of recirculated water and turbidity index cannot be met the requirements, then underproof recirculated water is passed through biofiltration and returned Water lines return in biological film filter, re-start processing, until recirculated water COD and turbidity index meet the requirements for Only;When the water quality qualification of recirculated water in recirculated water bypath filter water return pipeline, then the qualified recirculated water of processing is passed through into circulation Water bypath filter water return pipeline is back in circulating water cooling tower.
The invention has the following advantages:
Environmentally friendly recirculated water by-pass flow biological treatment system of the present invention and method are when specific operation, by killing The compound disinfectant that microbial inoculum adds case output carries out sterilization processing to the recirculated water in circulating water cooling tower, eliminates in recirculated water The recirculated water of indigenous flora, circulating water cooling tower output enters in biological film filter, while carbon source is added into recirculated water And biological agent, so that the biological flora in biological agent carries out growth and breeding in the case where recycling water environment, so that biomembrane The surface of filtrate forms biomembrane in filter, and after biofilm formation, giving full play to has flocculation ability bacterium in biological agent The substance that group generates, by the colloid and suspended matter little particle aggregate and precipitate in recirculated water, to reduce turbidity and the suspension of recirculated water Object, the flora in biological agent is by organic matter, dissolved oxygen and the nitrogen phosphorus in breeding consumption recirculated water, so that the COD of recirculated water Content meets system service requirement, and to realize scale inhibition, anti-corrosion and the sterilization purpose of recirculated water, structure is simple, easy to operate, can The safe and stable operation for effectively guaranteeing circulation, and will not cause secondary pollution to environment, have it is biggish it is economical with Social benefit.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
Wherein, 1 be recirculated water come waterpipe, 2 be circulating cooling make-up water high-efficiency fiber filter, 3 be recirculated water supplement pipeline, 4 it is filter backwash waterpipe, 5 be centrifugal sludge concentrator, 6 be circulating water cooling tower, 7 is that circulating-water bypass flows through and filters out water Pipeline, 8 be bypath filter flow pump, 9 be biological film filter, 10 be haydites of book structure filter, 11 be filter outlet pipe road, 12 it is recirculated water bypath filter water return pipeline, 13 be monitoring turbidimeter, 14 be online COD detector, 15 is that circulating-water bypass flows through Filter back-water valve (BWV), 16 be biofiltration water return pipeline, 17 be biofiltration back-water valve (BWV), 18 be haydites of book structure filter backwash water pipe Road, 19 be concentration basin supernatant water return pipeline, 20 be the outer discharge pipe of dehydrated sludge, 21 be carbon source supplement case, 22 be that carbon source is mended Fill pump, 23 be biology supplement case, 24 be biological make-up pump, 25 be fungicide add case, 26 be fungicide dosing pump, 27 be circulation Water blow-off line, 28 be Circulating water effluent valve, 29 be online conductance table.
Specific embodiment
The invention will be described in further detail with reference to the accompanying drawing:
With reference to Fig. 1, environmentally friendly recirculated water by-pass flow biological treatment system of the present invention includes that recirculated water carrys out water pipe Road 1, circulating cooling make-up water high-efficiency fiber filter 2, recirculated water supplement pipeline 3, circulating water cooling tower 6, filter backwash waterpipe 4, centrifugal sludge concentrator 5, circulating-water bypass, which flow through, filters out water lines 7, biological film filter 9, haydites of book structure filter 10, mistake Filter outlet conduit 11, carbon source supplement case 21, biology supplement case 23, recirculated water bypath filter water return pipeline 12, biofiltration are returned Water lines 16, haydites of book structure filter backwash water lines 18, concentration basin supernatant water return pipeline 19, Circulating water effluent pipeline 27; Recirculated water carrys out waterpipe 1 and is connected with the entrance of circulating cooling make-up water high-efficiency fiber filter 2, the filtering of circulating cooling make-up water high-efficiency fiber The production mouth of a river of device 2 supplements pipeline 3 by recirculated water and is connected with the tower basin of 6 bottom of circulating water cooling tower, and circulating cooling make-up water is efficient The backwash water out of fabric filter 2 is connected by filter backwash waterpipe 4 with centrifugal sludge concentrator 5;Recirculated water cooling But the outlet of 6 bottom tower basin of tower is flowed through through circulating-water bypass filters out water lines 7 and is connected with the water inlet of biological film filter 9, raw The water outlet of object membrane filter 9 is connected with the water inlet of haydites of book structure filter 10, the water outlet of haydites of book structure filter 10 It is connected through filter outlet conduit 11 and recirculated water bypath filter water return pipeline 12 with the tower basin of 6 bottom of circulating water cooling tower; Biofiltration water return pipeline 16 is flowed through with recirculated water bypath filter water return pipeline 12 and circulating-water bypass respectively to be filtered out water lines 7 and is connected It is logical, the water inlet and haydites of book structure filter 10 of haydites of book structure filter backwash water lines 18 and centrifugal sludge concentrator 5 Backwash water out is connected, the concentrated pond supernatant water return pipeline 19 of the supernatant outlet of centrifugal sludge concentrator 5 and circulation Water carrys out waterpipe 1 and is connected;The discharge outlet of 6 bottom tower basin of circulating water cooling tower is connected with Circulating water effluent pipeline 27;Sterilization The outlet that agent adds case 25 is connected through fungicide dosing pump 26 with the tower basin of 6 bottom of circulating water cooling tower;Carbon source supplements case 21 Outlet be connected through carbon source make-up pump 22 with the carbon source entrance of biological film filter 9, biology supplement case 23 outlet through biology Make-up pump 24 is connected with the biology supplement interface of biological film filter 9.
Circulating-water bypass, which flows through to filter out, is provided with bypath filter flow pump 8 in water lines 7;Recirculated water bypath filter water return pipeline Monitoring turbidimeter 13, online COD detector 14 and recirculated water bypath filter back-water valve (BWV) 15 are provided on 12;Biofiltration return pipe Road 16 is equipped with biofiltration back-water valve (BWV) 17;Online conductance table 29 and Circulating water effluent valve are provided on Circulating water effluent pipeline 27 28;The sludge outlet of centrifugal sludge concentrator 5 is communicated with the outer discharge pipe 20 of dehydrated sludge.
Environmentally friendly recirculated water by-pass flow bioremediation of the present invention the following steps are included:
1) raw water removes the suspended matter in water removal through circulating cooling make-up water high-efficiency fiber filter 2 come waterpipe 1 by recirculated water, makes The turbidity that circulating cooling make-up water high-efficiency fiber filter 2 is discharged is obtained to control in 12NTU hereinafter, circulating cooling make-up water high-efficiency fiber filter The recirculated water of 2 outputs enters in circulating water cooling tower 6 as cooling tower moisturizing, and circulating cooling make-up water high-efficiency fiber filter 2 exists The backwash water generated in filter process carries out separation of solid and liquid disposition using centrifugal sludge concentrator 5;
2) start fungicide dosing pump 26, fungicide is added into the compound disinfectant automatic feeding in case 25 to recirculated water cooling But in tower 6, sterilization processing is carried out to the recirculated water in circulating water cooling tower 6 by compound disinfectant, eliminates the soil in recirculated water Write flora, promote the dominant growth of subsequent bio medicament, after adding the processing of biological water stabilizer, stop oxidizing bactericide and Corrosion inhibiting and descaling agent adds;
3) recirculated water in circulating water cooling tower 6 is flowed through by circulating-water bypass filters out water lines 7, in bypath filter flow pump Under the action of 8 enter biological film filter 9 in, using biological make-up pump 24 by biology supplement case 23 in biological agent add to In biological film filter 9, while carbon source is supplemented to biomembrane mistake by the carbon source automatic feeding in case 21 by carbon source make-up pump 22 In filter 9, so that biological agent carries out growth and breeding in the case where recycling water environment, so that filtrate in biological film filter 9 Surface forms biomembrane, after biofilm formation, gives full play to the substance generated in biological agent with flocculation ability flora, will Colloid and suspended matter little particle aggregate and precipitate in recirculated water, to reduce the turbidity and suspended matter of recirculated water, in addition, by following The control of ring water pH plays the role of scale inhibition with corrosion calcium carbonate;Flora in biological agent passes through in breeding consumption recirculated water The nutrient sources such as organic matter, dissolved oxygen and nitrogen phosphorus so that the COD content of recirculated water meets system service requirement;
4) recirculated water that biological film filter 9 exports enters in haydites of book structure filter 10, utilizes the more of haydites of book structure Hole adsorptivity is filtered processing to recirculated water, with the sludge for capturing the microbial sludge to fall off and generating through flocculation;
5) recirculated water that haydites of book structure filter 10 exports enters recirculated water bypath filter through filter outlet conduit 11 In water return pipeline 12, by online COD detector 14 and monitoring turbidimeter 13 in recirculated water bypath filter water return pipeline 12 Recirculated water carries out quality monitoring, when the COD of recirculated water and turbidity index cannot be met the requirements, closes recirculated water bypath filter and returns Underproof recirculated water is returned in biological film filter 9 by biofiltration water return pipeline 16, re-starts place by water valve 15 Reason, until the COD and turbidity index of recirculated water are met the requirements;When recirculated water in recirculated water bypath filter water return pipeline 12 When water quality qualification, then biofiltration back-water valve (BWV) 17 is closed, open recirculated water bypath filter back-water valve (BWV) 15, by the qualified circulation of processing Water is back in circulating water cooling tower 6 by recirculated water bypath filter water return pipeline 12;The backwash water of haydites of book structure filter 10 And the backwash water of circulating cooling make-up water high-efficiency fiber filter 2 enters in centrifugal sludge concentrator 5 and carries out mud-water separation, In, the supernatant separated is sent into recirculated water by concentration basin supernatant water return pipeline 19 to be used as recirculated water in waterpipe 1 Water recycling is supplemented, the sludge separated is discharged through discharge pipe 20 outside dehydrated sludge.

Claims (7)

1. a kind of environmentally friendly recirculated water by-pass flow biological treatment system, which is characterized in that including recirculated water come waterpipe (1), Circulating cooling make-up water high-efficiency fiber filter (2), recirculated water supplement pipeline (3), circulating water cooling tower (6), filter backwash water pipe Road (4), centrifugal sludge concentrator (5), circulating-water bypass, which flow through, filters out water lines (7), biological film filter (9), haydites of book structure Filter (10), filter outlet pipe road (11), carbon source supplement case (21), biology supplement case (23), recirculated water bypath filter return Water lines (12), biofiltration water return pipeline (16), haydites of book structure filter backwash water lines (18), concentration basin supernatant return water Pipeline (19) and Circulating water effluent pipeline (27);
Recirculated water carrys out waterpipe (1) and is connected with the entrance of circulating cooling make-up water high-efficiency fiber filter (2), and circulating cooling make-up water is efficient The production mouth of a river of fabric filter (2) is connected by recirculated water supplement pipeline (3) with the tower basin of circulating water cooling tower (6) bottom, The backwash water out of circulating cooling make-up water high-efficiency fiber filter (2) is by filter backwash waterpipe (4) and centrifugal sludge condensation Device (5) is connected;
The outlet of circulating water cooling tower (6) bottom tower basin is flowed through through circulating-water bypass filters out water lines (7) and biological film filter (9) Water inlet be connected, the water outlet of biological film filter (9) is connected with the water inlet of haydites of book structure filter (10), shale The water outlet of ceramic filtration device (10) is through filter outlet conduit (11) and recirculated water bypath filter water return pipeline (12) and circulation The tower basin of water cooling tower (6) bottom is connected;
Biofiltration water return pipeline (16) flows through with recirculated water bypath filter water return pipeline (12) and circulating-water bypass respectively and filters out water Pipeline (7) is connected, the water inlet and shale of haydites of book structure filter backwash water lines (18) and centrifugal sludge concentrator (5) The backwash water out of ceramic filtration device (10) is connected, the concentrated pond supernatant of supernatant outlet of centrifugal sludge concentrator (5) Liquid water return pipeline (19) carrys out waterpipe (1) with recirculated water and is connected;The discharge outlet and circulation of circulating water cooling tower (6) bottom tower basin Water blow-off line (27) is connected;
The outlet that fungicide adds case (25) is connected through fungicide dosing pump (26) with the tower basin of circulating water cooling tower (6) bottom It is logical;
The outlet of carbon source supplement case (21) is connected through carbon source make-up pump (22) with the carbon source entrance of biological film filter (9), raw The outlet of object supplement case (23) is connected through biological make-up pump (24) with the biology supplement interface of biological film filter (9).
2. environmentally friendly recirculated water by-pass flow biological treatment system according to claim 1, which is characterized in that circulating-water bypass It flows through to filter out and is provided with bypath filter flow pump (8) on water lines (7).
3. environmentally friendly recirculated water by-pass flow biological treatment system according to claim 1, which is characterized in that circulating-water bypass It flows through and is provided with monitoring turbidimeter (13), online COD detector (14) and recirculated water bypath filter time in filter water return pipeline (12) Water valve (15).
4. environmentally friendly recirculated water by-pass flow biological treatment system according to claim 1, which is characterized in that biofiltration Water return pipeline (16) is equipped with biofiltration back-water valve (BWV) (17).
5. environmentally friendly recirculated water by-pass flow biological treatment system according to claim 1, which is characterized in that recirculated water row Online conductance table (29) and Circulating water effluent valve (28) are provided on dirty pipeline (27).
6. environmentally friendly recirculated water by-pass flow biological treatment system according to claim 1, which is characterized in that centrifugal dirt The sludge outlet of mud inspissator (5) is communicated with the outer discharge pipe (20) of dehydrated sludge.
7. a kind of environmentally friendly recirculated water by-pass flow bioremediation, which comprises the following steps:
1) raw water removes the suspended matter in water removal through circulating cooling make-up water high-efficiency fiber filter (2) come waterpipe (1) by recirculated water, makes The turbidity for obtaining circulating cooling make-up water high-efficiency fiber filter (2) water outlet is controlled in 12NTU hereinafter, circulating cooling make-up water high-efficiency fiber filters The recirculated water of device (2) output enters in circulating water cooling tower (6) as cooling tower moisturizing;
2) start fungicide dosing pump (26), fungicide is added into the compound disinfectant automatic feeding in case (25) to recirculated water cooling But in tower (6), sterilization processing is carried out to the recirculated water in circulating water cooling tower (6) by compound disinfectant, is eliminated in recirculated water Indigenous flora, promote subsequent bio medicament dominant growth;
3) recirculated water in circulating water cooling tower (6) is flowed through by circulating-water bypass filters out water lines (7), in bypath filter flow pump (8) under the action of enter biological film filter (9) in, using biological make-up pump (24) by biology supplement case (23) in biological medicament Agent is added into biological film filter (9), while by carbon source make-up pump (22) that the carbon source in carbon source supplement case (21) is automatic It adds into biological film filter (9), so that biological agent carries out growth and breeding in the case where recycling water environment, so that biomembrane The surface of filtrate forms biomembrane in filter (9), and after biofilm formation, giving full play to has flocculation ability in biological agent The substance that flora generates, by the colloid and suspended matter little particle aggregate and precipitate in recirculated water, to reduce the turbidity of recirculated water and hang Floating object, in addition, with corrosion calcium carbonate, playing the role of scale inhibition by the control to recirculated water pH;Flora in biological agent is logical Organic matter, dissolved oxygen and the nitrogen phosphorus in breeding consumption recirculated water are crossed, so that the COD content of recirculated water meets system service requirement;
4) recirculated water of biological film filter (9) output enters in haydites of book structure filter (10), utilizes the more of haydites of book structure Hole adsorptivity is filtered processing to recirculated water, with the sludge for capturing the microbial sludge to fall off and generating through flocculation;
5) recirculated water of haydites of book structure filter (10) output enters recirculated water bypath filter through filter outlet conduit (11) In water return pipeline (12), by online COD detector (14) and monitoring turbidimeter (13) to recirculated water bypath filter water return pipeline (12) recirculated water in carries out quality monitoring, then will be underproof when the COD of recirculated water and turbidity index cannot be met the requirements Recirculated water is returned in biological film filter (9) by biofiltration water return pipeline (16), re-starts processing, until recirculated water COD and until turbidity index meets the requirements;When the water quality qualification of recirculated water bypath filter water return pipeline (12) interior recirculated water, Then the qualified recirculated water of processing is back in circulating water cooling tower (6) by recirculated water bypath filter water return pipeline (12).
CN201910511948.6A 2019-06-13 2019-06-13 A kind of environmentally friendly recirculated water by-pass flow biological treatment system and method Pending CN110156275A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022078672A1 (en) * 2020-10-16 2022-04-21 Sms Group Gmbh Method of treating a cooling circuit water contaminated with organic substances and inorganic particles
WO2022078673A1 (en) * 2020-10-16 2022-04-21 Sms Group Gmbh Method for eliminating legionellae from water of a cooling circuit, which is loaded with organic substances and inorganic particles

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022078672A1 (en) * 2020-10-16 2022-04-21 Sms Group Gmbh Method of treating a cooling circuit water contaminated with organic substances and inorganic particles
WO2022078673A1 (en) * 2020-10-16 2022-04-21 Sms Group Gmbh Method for eliminating legionellae from water of a cooling circuit, which is loaded with organic substances and inorganic particles

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