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Industrial wastewater zero discharging treatment process and system

A technology for treating process and industrial wastewater, which is applied in the field of water treatment, can solve the problems of secondary environmental pollution and incomplete treatment, and achieve the effect of thorough wastewater treatment and not easy secondary environmental pollution

Inactive Publication Date: 2017-05-31
TG HILYTE ENVIRONMENTAL TECHNOLOGY (BEIJING) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the use of standard discharge treatment mode to treat industrial wastewater has the problem of incomplete treatment and prone to secondary environmental pollution.

Method used

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  • Industrial wastewater zero discharging treatment process and system

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0085] Industrial Wastewater Zero Discharge Treatment System

[0086] The treatment system provided in this embodiment includes: wastewater storage tank, first pH adjustment tank, second pH adjustment tank, anaerobic tank, first aerobic tank, second aerobic tank, membrane bioreactor, organic sludge concentration tank, activated carbon filter, resin tower, BWRO raw water tank, BWRO unit, BWRO concentrated water tank, SWRO unit, SWRO concentrated water tank, MRV evaporator, concentrate tank, VDC dryer, condenser and reuse water tank.

[0087] The waste water storage tank is provided with a water inlet and a water outlet.

[0088] The first pH adjusting tank is provided with a pH adjusting agent feeding port, a water inlet and a water outlet. The water inlet of the first pH adjustment tank is connected with the water outlet of the waste water storage tank.

[0089] The second pH adjusting tank is provided with a pH adjusting agent feeding port, a water inlet and a water outlet....

Embodiment 2

[0110] Industrial Wastewater Zero Discharge Treatment Process

[0111] Adopt the treatment system that embodiment 1 provides to carry out zero-discharge treatment to industrial waste water

[0112] Daily processing capacity: 360t / d; imported salt content: 4500mg / L, imported COD: 350mg / L, imported ammonia nitrogen: 35mg / L, imported total phosphorus: 15mg / L.

[0113] During the operation of the treatment system, the pH value of the effluent from the second pH adjustment tank is 7-8;

[0114] Anaerobic tank, the first aerobic tank and the second aerobic tank, the total hydraulic retention time during the treatment process is 10 hours, the BOD5 sludge load is 0.2, the dissolved oxygen in the anaerobic tank is 0.15 mg / L, and the dissolved oxygen in the aerobic tank is 2 mg / L , TN load 0.05 (aerobic section), TP load 0.06 (anaerobic section), sludge concentration 4500mg / L, sludge age 20 days, reflux ratio 150%. The water quality indicators of aerobic treatment effluent, COD≤70mg / L...

Embodiment 3

[0125] Industrial Wastewater Zero Discharge Treatment Process

[0126] Adopt the treatment system that embodiment 1 provides to carry out zero-discharge treatment to industrial waste water

[0127] Daily processing capacity: 500t / d; imported salt content: 5000mg / L, imported COD: 450mg / L, imported ammonia nitrogen: 25mg / L, imported total phosphorus: 10mg / L.

[0128] During the operation of the treatment system, the pH value of the effluent from the second pH adjustment tank is 7-8;

[0129] The total hydraulic retention time in the treatment process of the anaerobic tank, the first aerobic tank and the second aerobic tank is 8 hours, the BOD5 sludge load is 0.2, the dissolved oxygen in the anaerobic tank is 0.15 mg / L, the dissolved oxygen in the aerobic tank is 5 mg / L, TN load 0.05 (aerobic section), TP load 0.06 (anaerobic section), sludge concentration 3500mg / L, sludge age 15 days, reflux ratio 120%. The water quality index of aerobic treatment effluent, COD≤60mg / L, ammonia...

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Abstract

The invention belongs to the field of water treatment and particularly relates to an industrial wastewater zero discharging treatment process and system. The industrial wastewater zero discharging treatment process comprises the following steps: (a) sequentially performing pH adjustment, anaerobic treatment, aerobic treatment and membrane bioreactor treatment on industrial wastewater to obtain pre-treated wastewater; (b) sequentially performing carbon filtration and resin adsorption on the pre-treated wastewater to obtain softened wastewater; (b) processing the softened wastewater by a brackish water desalination reverse osmosis membrane element to obtain first fresh water and first concentrated water, and recovering the first fresh water; (d) processing the first concentrated water by a seawater desalination reverse osmosis membrane element to obtain second fresh water and second concentrated water, and recovering the second fresh water; (e) performing evaporation and concentration on the second concentrated water to obtain steam and a concentrated solution, condensing the steam, recovering condensate water, and dehydrating the concentrated solution to obtain solid residues. According to the industrial wastewater zero discharging treatment process, industrial wastewater is subjected to a series of treatments, so that zero discharging of the industrial wastewater is realized.

Description

technical field [0001] The invention belongs to the field of water treatment, and in particular relates to a zero-discharge treatment process and a treatment system for industrial waste water. Background technique [0002] Microelectronics technology is one of the fastest-growing technologies in contemporary times, and it is the foundation and heart of the electronic information industry. The development of microelectronics technology has greatly promoted the rapid development of aerospace technology, telemetry sensing technology, communication technology, computer technology, network technology and household appliances industry. In our country, the microelectronics industry has been listed as a pillar industry of the national economy. Today, microelectronics technology has become an important symbol to measure a country's scientific and technological progress and comprehensive national strength. [0003] With the rapid development of the microelectronics industry, the res...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/10
CPCC02F1/001C02F1/048C02F1/28C02F1/285C02F1/441C02F1/66C02F3/02C02F3/1268C02F3/28C02F9/00C02F2301/08Y02A20/131
Inventor 陈胜利王晓许又志
Owner TG HILYTE ENVIRONMENTAL TECHNOLOGY (BEIJING) CO LTD
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