Mortar that is too hard will corrode the wall of the pool. Mortar that is too hard will form an insoluble condensate, which will collect on the wall or float in the water. Pool Test Strips Aquachek,Colorful Pool Test Strips,New Pool Test Kit,Good Pool Test Strips Jilin Test Bio-Electron Co., Ltd , https://www.tst-check.com
Hardness will also affect the pH value, if it is hard water, the pH value will be relatively stable, if it is soft water, the pH value is difficult to remain stable.
Hard water refers to water with a calcium ion concentration of more than 250mg/L and a basicity of more than 150mg/L.
Soft water refers to water with a concentration of calcium carbonate less than 50mg/L or a concentration of calcium chloride less than 30mg/L.
The ideal range of calcium and magnesium ions is 200-400mg/L, and the national standard is less than 450mg/L.
First of all, whether it is sewage, exhaust gas or noise, monitoring instruments and data acquisition and transmission instruments (data acquisition instruments) need to be installed at the discharge port site. Due to the harsh environment, the requirements for instruments and Equipment are very high, so the equipment must It is industrial grade and has certain protection capabilities. Secondly, the acquisition accuracy and acquisition capability of the data acquisition transmitter can meet the requirements, and a variety of communication means are available to meet the requirements of normal reporting of data under different conditions. Again, the stability and reliability of each instrument is better to minimize maintenance costs.
The pollution source online monitoring system has strong real-time performance. Compared with the short message service, because GPRS has real-time online characteristics, the system has no time delay and can receive and process various data of multiple/all monitoring points synchronously without round robin. It can meet the requirements of the system for real-time data collection and transmission. The collected pollution data and alarm information can be timely sent to the environmental protection monitoring department through the GPRS network to realize timely management of the pollutant discharge unit or individual, which can greatly improve the work efficiency of the environmental protection department. The pollution source online monitoring system can remotely control the instruments and equipment of each monitoring point. The GPRS two-way system can also realize reverse control of instruments and equipment, such as time correction, status report, switch and other control functions, and can perform remote online upgrade of the system. The construction cost is low, because the GPRS public network platform is adopted, there is no need to build a network, only the equipment can be installed, and the construction cost is low.
The data transmission rate of the pollution source online monitoring system is high, and the data transmission amount of each environmental information collection point is within 10Kbps. The transmission rate of GPRS network can reach 171.2kbit/s theoretically. The actual data transmission rate of GPRS is about 40Kbps, which can fully meet the data transmission rate (≥10Kbps) of this system. The communication cost is low, the monthly billing method is adopted, and the operation cost is low. It has good scalability. Since the current GSM/GPRS network has covered most of the provinces, there is basically no blind zone, and a wide range of online monitoring can be realized. Environmental protection information collection and transmission system requirements for coverage. The transmission capacity of the system is large, and the environmental protection center station must realize real-time connection with each environmental information collection point. Due to the large number of environmental information collection points, the system requirements can meet the needs of sudden data transmission, and GPRS technology can well meet the needs of transmitting bursty data.