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Method for treating wastewater containing high-concentration nitrate nitrogen

A nitrate nitrogen, high-concentration technology, applied in anaerobic digestion treatment, chemical instruments and methods, special compound water treatment, etc. and monitoring, enhanced efficiency, continuous effect

Inactive Publication Date: 2019-04-26
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Purpose of the present invention: to solve the problem that at the present stage, in the process of treating organic wastewater containing high concentration of nitrate nitrogen, the treated anaerobic nitrification liquid has high nitrogen and low carbon, and the problem of nitrate nitrogen cannot be discharged up to the standard. Adjustment and control of various process indicators, including the control of wastewater inlet temperature, PH value, and wastewater carbon, nitrogen, and phosphorus ratios. After the inlet water meets the requirements of various indicators, it is pumped into a specific anaerobic bioreactor for biochemical reactions. , can achieve the purpose of efficiently treating high-concentration nitrate nitrogen

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] In the comprehensive adjustment tank, the water temperature is controlled at 25°C, the initial pH is controlled at 2.4, carbon source: nitrogen source: phosphorus source = 245: 3: 1.5, by adjusting the concentration of nitrate nitrogen in the tank, the sewage passes through the anaerobic reactor Finally, analyze the value of nitrate nitrogen concentration in the effluent.

Embodiment 2

[0023] In the comprehensive adjustment tank, the concentration of nitrate nitrogen in the adjustment tank is controlled at 1300mg / L, the initial pH is at 2.5, carbon source: nitrogen source: phosphorus source = 255:3.5:2, by controlling the temperature of the comprehensive adjustment tank, the sewage passes through anaerobic After the reactor, analyze the concentration of nitrate nitrogen in the effluent.

Embodiment 3

[0025] In the comprehensive adjustment tank, control the sewage carbon source in the adjustment tank: nitrogen source: phosphorus source = 300:4:2, the water temperature is controlled at 35°C, and the nitrate nitrogen concentration in the comprehensive pool is 1200mg / L. By controlling the PH of the comprehensive pool, in After the sewage passes through the anaerobic reactor, the concentration of nitrate nitrogen in the effluent is analyzed.

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Abstract

The invention belongs to the technical field of environmental protection, and relates to a method for treating wastewater containing high-concentration nitrate nitrogen. Before entering an anaerobic bioreactor, the wastewater needing to be treated is adjusted to the appropriate specific value of a carbon source to a nitrogen source to a phosphorus source, the appropriate temperature and the appropriate pH range, and by measuring the value of the nitrate nitrogen concentration in a comprehensive pool before water entering and the nitrate nitrogen concentration in a water discharging pool aftertreating, the effect of the method on treatment of the nitrate nitrogen in the sewage at the present stage is analyzed. According to the method, the high-concentration nitrate nitrogen wastewater withthe concentration upper limit being 1400 mg / L can be treated, the industry standard is met, and standardized discharge of the nitrate nitrogen in the sewage is achieved.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and in particular relates to a method for treating waste water containing high-concentration nitrate nitrogen. Background technique [0002] The chemical industry, as a key industry for pollutant discharge, has an inescapable responsibility and obligation for energy conservation, emission reduction and environmental protection advocated globally at this stage. -2006) required that chemical companies should achieve a direct discharge target of total nitrogen in wastewater below 25 mg / L starting from January 1, 2007. [0003] At present, for the treatment of waste water containing nitrate nitrogen, the peak concentration is 800 mg / L. For organic waste water containing nitrate nitrogen, anaerobic nitrification process is generally used to remove most of the organic pollutants and reduce the subsequent environmental protection load. High-concentration organic wastewater contains a c...

Claims

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Application Information

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IPC IPC(8): C02F3/28
CPCC02F3/28C02F2305/06
Inventor 杨兴王金质王正兵马增贵
Owner CHINA PETROLEUM & CHEM CORP