Modular, customized product line-aided wastewater monitoring development

　　Wastewater management has been an important component of water environmental governance, and in recent years, with policy support, the sewage sector has developed better and its capacity has continued to grow.

　　Sewage wastewater includes medical sewage, industrial wastewater, household wastewater, etc. The number of sewage treatment plants and the length of municipal drainage pipes are increasing year by year, according to the construction of sewage treatment infrastructure. As the virus in the new coronary pneumonia epidemic is likely to be transmitted through excreta and sewage, there is a higher demand for wastewater treatment. Monitoring and testing of the quality of sewage water forms the basis and safeguard of wastewater treatment.

　　What are the characteristics of the current state of sewage discharge and management in our country?

　　To understand the current state of waste water management in our country, we will begin with a set of figures: at the end of 2007, there were 883 sewage treatment plants in our cities, with a sewage treatment capacity of 71.38 million cubic metres per day and only 62.8 per cent of municipal sewage treatment rates. By the end of June 2019, more than 5,000 municipal sewage treatment plants (excluding municipal sewage treatment plants and industries) had been built in urban municipalities nationwide, with a capacity of 210 million cubic metres per day and a municipal sewage treatment rate of over 90 per cent. As can be seen, the scale of our sewage treatment has increased significantly over a period of more than a decade, from the 11th to 13th.

　　What are the existing standards and methods?

　　Based on environmental protection objectives and increasing levels of sewage treatment, the Ministry of Ecology has been working to promote the monitoring of technology development and the upgrading of standards requirements, such as the publication of a series of new standards/regulations for online monitoring of sewage, such as the Technical Guidelines for Sewerage Monitoring at the end of 2019, which began in the first half of 2020.

　　A series of new standards/regulations for online monitoring of sewage recently issued by the State

　　Our current standards for sewage discharges, mainly the Integrated Sewage Emission Standards (GB8978-1996) and the Pollution Emission Standards for Municipal Sewage Treatment Plants (GB1898-2002), have not been updated for many years and must change with the implementation of new standards/regulations for sewage online monitoring.

　　What are the projects in sewage wastewater monitoring that deserve attention?

　　In accordance with the existing standards for sewage discharge, the main focus of our wastewater monitoring project is also the parameters of chemical oxygen demand CODcr, ammonia nitrogen, total phophorus, total nitrogen, heavy metals, pH, etc.

　　What instrument products or combinations of products can Zhejianghe have in the monitoring of the quality of sewage water?

　　Zhejiang was able to have more complete sewage monitoring instrument product lines covering a variety of parameters to be measured for household sewage, industrial wastewater treatment and vents, such as chemical oxygen demand, ammonia nitrogen, total phophorus, total nitrogen, heavy metals, pH, dissolved oxygen, ORP, conservation, residual chlorine, etc. And we can provide some degree of customized, modular measurement solutions to help users save procurement and use costs through flexible combinations. For example:

　　Thermo ScientificTM

　　6850 Microwater Quality Online Automatic Monitoring System

　　6850 is the sub-model of the 6800 micro-water quality online automated monitoring system. Only 0.7 m2 is required to measure the conventional five parameters and the bi-parameters of the color method (the chemical oxygen demand CODcr, ammonia nitrogen, total phophorus, total nitrogen, heavy metals (total chromium, hexavalent chromium, lead, copper, manganese, nickel, etc.) and cyanide, etc.

　　Thermo ScientificTM OrionTM

　　3150 total phosphorus / total nitrogen online automatic monitor of water quality

　　Automatically toggle range

　　Flexiblely configure total phosphorus, total nitrogen single argument or two

　　Quantified, protected from sample colours and turbidities.

　　Thermo ScientificTM OrionTM

　　8010cX ammonia nitrogen automatic monitor

　　Application of the spectrophotometry of water glycol

　　Automatically switch the range without new calibration

　　High-precision injection pumps guarantee high-precision measurements.

　　IP65 protection level

　　Thermo ScientificTM

　　3300 heavy metal water quality online automatic monitor

　　Automatically toggle range

　　Quantified, protected from sample colours and turbidities.

　　2 parameters in total chromium, hexavalent chromium, lead, copper, manganese, nickel, etc. can be configured at all times

　　Thermo ScientificTM MPC

　　20 online multi-parameter universal controller

　　Regular 5 parameters, oil in water, chlorophyll, blue green algae, UV full spectrum, etc. can be measured simultaneously

　　The cost of each measurement point can be reduced by using 10+N sensors simultaneously

　　IP66 protection level

　　Thermo ScientificTM OrionTM

　　3106COD Chemical Oxygen Demand Automatic Monitor

　　Use of potassium chromiumate oxidation - color method, consistent with national standards

　　Automatically toggle and do not repeat calibration

　　IP66 protection level, suitable for worse environments

　　What solutions can Zhejianghe provide for water quality monitoring of wastewater?

　　At present, Zhejiang can provide solutions for a variety of wastewater monitoring, including Municipal/Industrial Wastewater Integrated Solutions, Measurements of General Wastewater, Solid Alkage Measurements in Surface Water/Wastewater, and water quality monitoring of various sewage effluents can be achieved with Zhejianghe-rich sewage monitoring instruments.