Anti-interference detection pretreatment and COD detection kit for chemical wastewater

A technology for detection kits and chemical wastewater, which is applied to the preparation of test water, samples for testing, measuring devices, etc., can solve the problems of high cost and long procurement time of imported detection reagents, and achieves low cost, simple operation and repeatability. good effect

Pending Publication Date: 2020-09-04
南京曼蕊生物科技有限公司
View PDF7 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, when wastewater treatment plants use Hach DR6000 to detect COD and other contents in wastewater, there is a phenomenon of long procurement time and high cost of imported detection reagents.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Anti-interference detection pretreatment and COD detection kit for chemical wastewater

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] In order to further understand the features, technical means, and achieved specific objectives and functions of the present invention, the following describes the present invention in detail with regard to specific embodiments. The following examples are only descriptive, not restrictive, and cannot limit the protection scope of the present invention.

[0023] In conjunction with the preferred example, the working process of the present invention is illustrated:

[0024] Take 1000ml of chemical wastewater. The aforementioned chemical wastewater was left to stand for a while at normal temperature and pressure, and then filtered to remove its sediment and insoluble matter. Put it into a laboratory biochemical gas separation and purification device, and continuously concentrate, so that the effluent COD is continuously concentrated and degraded to 1000mg / L. Remove interference from soluble iron salts, manganese salts, dissolved organic matter, and some radioactive elemen...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to an anti-interference detection pretreatment method for a centralized sewage treatment plant in a chemical area and preparation and detection methods of a COD detection kit. The invention provides a pretreatment method for degrading wastewater to COD of less than or equal to 1000mg / L through a low-temperature condensation device in a laboratory and removing interference ofheavy metals and the like; and preparation and a method of the detection kit for determining COD content at the wavelength of 620nm by using Hash DR6000 are adopted. The COD detection kit comprises aCOD detection reagent and a digestion colorimetric tube. The COD detection reagent comprises a chromium reagent and a silver reagent, and the chromium reagent is prepared from, in part by weight, 1-10parts of potassium dichromate, 5-30 parts of concentrated sulfuric acid, 1-10 parts of mercury sulfate and 50-90 parts of distilled water; and the silver reagent is prepared from, in part by weight,30-70 parts of silver sulfate and 30-70 parts of concentrated sulfuric acid. According to the detection method, the detection precision of the COD content of the chemical wastewater is improved, and more accurate reference is provided for subsequent environment-friendly treatment. The detection kit can be automatically configured, so that the detection cost is greatly reduced, and the operation iseasy.

Description

technical field [0001] The invention relates to the field of environmental protection treatment of industrial wastewater, in particular to the preparation and method of a chemical wastewater anti-interference detection pretreatment and a COD detection kit. Background technique [0002] The COD of wastewater discharged into the centralized wastewater treatment plant in the chemical industry often exceeds the set value of 1000mg / L, and the composition is complex, especially heavy metals, which often interfere with the results of daily detection of various indicators. Different anti-interference pretreatments need to be implemented for different wastewater . This method is aimed at the heavy metal-containing wastewater of the centralized sewage treatment plant in the chemical industry area. The on-site low-temperature condensation device is simulated in the laboratory, and the COD of the drainage is concentrated to 1000 mg / L or below, and the pH is 6-9 to meet the water inlet r...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/28G01N1/34G01N1/40G01N21/31G01N33/18
CPCG01N1/28G01N1/34G01N1/4022G01N21/31G01N33/1806G01N2001/4033
Inventor 张天时张先文
Owner 南京曼蕊生物科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap