During the past decades, rapid industrial developments in different countries have been putting an increasing pressure on the water resource requirement in the island country [1] . The demand for quality water resources in the industrial and agricultural sectors will be difficult to meet in the foreseeable future because of dwindling supply [2] . The imbalance in the demand and supply of water resources will become a common major issue confronting many countries around the world as well in the next few decades [3] . Throughout the last decade, industrial wastewater reuse has emerged as an important and viable means of supplementing dwindling water supplies in a large number of regions throughout the world [4] . In many instances, reuse is also promoted as a means of limiting wastewater discharges to aquatic environments [5] . Wastewater use occurs either indirectly, when partially untreated effluent is discharged into rivers that supply water for agriculture, or directly, at municipal farms when partially treated sewage effluent is conveyed into some gardens [6] . Past experience had shown that these developmental projects, created with the aim of producing socio-economic benefits, have also produced adverse environmental impacts [7] such as land degradation. The long term’s irrigation influence by sewage was studied in China and California State in America. [8] determined that irrigation with sewage would change some physical and chemical attribute of soil and some of this changes increased soil’s quality. Also, sewage has nutrient and mineral substances that increase crops and soil productivity. So, this method is an important and suitable way to increase soil’s product at dry and semi-dry areas. The only worry is heavy metals that will remain their bad effects after long time, so the risk assessment must be done for sewage using. The potential reassessment was performed in Greece to survived sewage quality [9] . It’s shown that secondly sewage using for irrigation is suitable for crops that do not use raw. [10] studied about secondly sewage irrigation impact on soil’s geochemical features in east Tunisia. They found that developed irrigation by infiltration sewage will increase salinity of soil and this salt will change soil’s structure. [11] studied about related risks of sewage reusing for environment in Greece and Cyprus. They found that the human’s health and environmental ecosystems are more important than water balance and water management. The irrigation by sewage influence on crop’s quality was studied in Tunisia [12] . They found that though this method is a very effective way but it is a big risk for agriculture’s crops and green environment also and changing crops and food quality is the biggest risk among them. [13] also studied about irrigation by sewage and environmental hygiene in Australia and showed that because of world’s limited source, sewage reusing and resumption are an urgent way but public health and environment must be preserved.

Iran Qom Shokouhie industrial state by 995 hectare extent located at 12 kilometers of Tehran-Qom old roads at center of Iran. This industrial state located at 42 - 34 geographical longitude and latitude at north and 51 - 50 at east and it is the nearest town to Qom in Iran. The state’s refinery based on two modulus and working with 2000 square meter average capacity at day. The refinery method of this industrial state is synthetic. Some part of the refined sewage of this industrial state are using for green space irrigation and the rest of that are using for industrial section after some advanced refinery stages. The green space of this industrial state contained green belt around town, boulevard, sidewalk that have 125 hectare extent. The used water in green space of industrial sate is about 1500 square meter. The source of used water of industrial state’s green space is industrial state’s water network. Also, state’s green space irrigation system is drop wise model. There are 10 kinds of non-productive broadleaf trees in the industrial sate. The total number of these trees is 41,854 and none of them is in endangered red list. The fruitful trees in this state are 4 trees and total of them are about 14,970 trees. The vinifera visit and punicagranatum are at low risk of extinction. The oleaeuropaea and pistca trees are not at endangered list. The perennial shrub of Qom Shokouhie industrial state is 11 trees and total of them are about 69,045 and among them, tamarix has a low risk of extinction in the red list, but other shrubs are not at red list. The needle leaf trees in Qom Shokouhie industrial state are 5 trees and total of them are about 10,540. The Cupressus arizonica and Juniperus horizontalis monech are at low risk. The produced water volume of existent wells are 50 liters at second and mentioned wells are activated during 26 days of months and the produced water volume are about 3745 square meter at day and some part of that considered as losses (due to aging of state network, about 20 percent of water network considered as losses). 1400 meter of water are using in industrial state. Rest of that are using for green space irrigation and this amount is about 1500 square meter. Figure 1 shows the geographic location of Iran Qom Shokouhie industrial state.

The purpose of this study was to assess the environmental effects of Iran Qom Shokouhieh industrial state of wastewater effluent in irrigation of green space. Firstly, the environmental impacts of the project was identified, according to studies on environmental effects of using industrial wastewater effluent for irrigation of green space and agriculture in Iran and in other countries and based on technical, environmental and field studies including visiting and identifying the site and its affected environment. Then some interviews were done by industrial organization employers and workers and labors of Qom Shokouhie industrial sate, respectively. The entering and existing of wastewater effluent quality and quantity of state’s refinery was determined on important parameters of BOD, COD, TSS, TDS, PH and the wastewater temperature from March 2012 until February 2013. Then chemical, biological and physical analysis of important parameters of wastewater effluent and heavy metals measurement was done from July 2012 until January 2013. Measuring stations are inputs and outputs of wastewater that are measured once per month. Finally, the heavy metals, EC, pH, and some anions and cations in the soil like Na⁺, K⁺, Mg²⁺, Ca²⁺ were measured at Tehran Research Institute. The spectrophotometer tool was used for anions measurement, flame photometer was used for cation’s measurement and atomic absorption tool was used for measuring heavy metals. All testing and sampling condition are done based on standard methods for water and wastewater treatment. Rapid Impact Assessment Method with RIAM BASIC Software and Entropy Method was performed to review the environmental effect of using industrial wastewater effluent of Iran Qom Shokouhie for green space irrigation. Diagram 1 shows the processes of measuring environmental effects of using industrial wastewater effluent in Qom Shekoohie industrial state—Iran.

Diagram 1. Processes of measuring environmental effects of using industrial wastewater effluent in Qom Shekoohie industrial state— Iran.

Considering environmental effects of wastewater effluent using by RIAM and entropy method and comparing both result with each other, it shows that the cultural-social, physicochemical, biological and economical environments had received the most negative effects respectively. The important limitable elements are entering chemical pollution (nitrate) to underground waters and water ecosystems, soil salinity and toxicity of industrial state, changing soil permeability and chemical features, threatening the endangered species of state including Vitis vinifera “Punica granatum” tamarix, Cupressus arizonica, Juniperus horizontalis, endangering public health

and increasing disease parameters among employers specially the labors who are in contact with wastewater effluent and effect on economic parameters (cost of wastewater treatment).

The most positive elements of this method are increasing and saving underground waters, creating green spaces and deserts reduction, decreasing wastewater effluent amount from outside of state, increasing soil productivity and having beautiful ecosystem. Finally, the wastewater effluent using for irrigation of green space has no effect on 3 elements: surface water quality, surface water quantity (because there is no any considerable river around Iran Qom Shoukouhieh industrial state) and rare animals’ species (because there is no any rare animal in state and around that).